Trimming-machine for boot or shoe work



Nb. 609,519. Patented Allg. 23, |893i B. F. MAYO. TRIMMING MACHINE FORBOOT 0R SHOE WORK.

(Applimtion filed May 22, 1897.)

Nu Modem BENJAMIN F. MAYO, OF SALEM, MASSACHUSETTS, ASSIGNOR TO JAMES W.BROOKS, PRINCIPAL TRUSTEE, OF PETERSHAM, AND JOIIN BROOKS, ASSOCIATETRUSTEE, OF CAMBRIDGE, MASSACHUSETTS.

TRlMivslNe-MAQHINE Fouu soo-r ou SHOE wom` SPECIFICATION formingpart ofLetters Patent No. eoe,519, date .August es, lees.

` Application filed May 22, 1897. SerialNo. 637,660. (No model.)

To all whom 'rtmay concern; b

Be it known that L'BENJMIN F. MAYO, of Salem, county of Essex, State ofMassachusetts, have invented an Improvement in Trimming-Machines forBoot or Shoe Work, of which the following description, in connectionwith the accompanying drawings, is a vIO Cutter.

specification, like letters and figures on the drawings representinglike parts.

This invention has for its object to improve the construction andoperation of that class of trimming-machines employed for boot and shoework, my improvement consisting in combining with a rotary cutter andits shaft a spring-supported yielding table movable back and forthparallel to the aXis of motion of the said shaft and itsv cutter, thesaid table being also adjustable, so that it in use may occupy aposition more or less angular with relation to the'axis of rotation ofsaid shaft and Figure -l in top or plan view shows a sufficient portionof a trimming-machine to illustrate myimprovements. Fig. 2 is a sideelevation of the parts shown in Fig. l, and Fig. 3 is a front orleft-hand view of the parts shown in Fig. l.

In the drawings let A represent the framework of a usualtrimming-machine for boot and shoe work, said framework having bearingsfor a suitable rotating shaft B, provided at its front or left hand endwith the randguide a, a rotary cutter b, and a feather-edger composed ofa ring c, having a series of bevelended fingers which enter the spacesbetween the blades of and rotate in unison with the cutter, said fingersacting against the treadface of the heel being trimmed. Thisfeatheredger by acting against the tread-face of the heel or sole endofthe heel in the line ofthe cut being made by the blades of the cuttertends to keep the latter firmly up in position in the line where it isbeing cut, thus preventing the leather from spreadin g or rolling overto leave a feather or ragged edge.

The rand-guide a is provided at its outer face with a beveled surface,(shown at the left in Figs. l and 2,) which during the action of thetrimming-cutter rests against the upper lying on the last,it may be,andfollows the contour of the last during thetrimming operation.

The framework receives a sleeved, which is fixed thereon and constitutesoneoi the bearings for the shaft B. A Vspring c, surrounds the sleeve d,and beyond said spring the said sleeve is also surrounded by a slidingcollar e', said collar having projecting from one side of it an arm e2to constitute a tablesupport entirely independent of the randguide. Thistable-support has pivoted upon itat e3, near the circumference of therandguide, a table e4, said table having a wing or projection e5, whichis slotted at f to be entered by a clamp-screw f', screwed into the arme2, said clamp-screw enabling the face of the table to be adj usted toany desired inclination with relation to the aXisof rotation arm, andtable are free to slide longitudinally on or withrelationto the shaftBindependently of the rand-guide, and to prevent the rotation of saidcollar on the said sleeve I have provided the collar with a slot e6,which is entered by a pin extended from said sleeve d. l

The front end of the sleeve CZ receives against it a spiral spring g,the opposite end of said spring acting against the hollow shank h of thefeather-edger c, thus leaving said featheredger free to be slidlongitudinally on the shaft B to uncover more or less of the length ofthe teeth of the cutter, as may be required, to thereby adapt the cutterto trim a heel or sole of varying'thickness.

The rand-guide a runs in a fixed path in the usual rand-crease or thespace between the sole and upper, and the convenededge portion a of therand-guide acts uponthe upper lying, it maybe, on thelast, and at thesame time the feather-edger acts againstthe bottom or tread-face of theheel if a heel is being trimmed, or the sole if the heel is of thevariety known as spring-heel, or the face of the sole if the sole aloneis being trimmed, the said feather-edger yielding to the variations inthickness of the heel or sole, and the said table follows thefeatherfedger as it adapts itself to varying thicknesses being trimmed.

The shoe the heel of which is bein gtrimmed will first be pressedagainst the face of the table e4, 'and said heel or sole, as it may be,will be then pressed toward and against the cutter until the rand-guideenters the usual rand-crease, the edge of the heel or sole actingagainst the feather-edger and crowding it to the right, viewing Fig. 1,more or less,accord ing to the thickness of the heel or sole, and duringthis operation the shoe will be turned more or less on or about saidtable.

If it should be desired to trim the heel at a delined angle, then thetable may be adjusted by or through the set-screw f to the requiredangle, and thereafter during the trimming operation the table willremain at the same angle.

In this invention the table is not swung up or down or turning about apivot during the operation of trimming the heel.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a trimming-machine, a rotary shaft having an attached rand-guide,and a cutter; and a feather-edger loose on said shaft and having teethto enter between the blades of the cutter, said featherwedger rotatingwith said cutter and being movable longitudinally on or with relation tosaid shaft; combined with an independent, spring-controlled table mademovable in a line parallel with the axis of rotation of vthe said shaft,to follow the feather-edger in adapting itself to material of varyingthickness, substantially as described.

2. In a trimming-machine for boots and shoes, a rotary shaft, aconnected rand-guide, and a rotating cutter; a spring-controlledfeather-edger rotatable with said cutter and adapted to be moved to andfrom said randguide by varying thicknesses of material being trimmed;combined with a table-support and a table made adjustable on saidsupport, to thereby change its angle with relation to the axis of saidshaft, said table-support and table being movable in a line parallel tothe axis of rotation of said shaft, and in unison with thefeather-edger, substantially as dev scribed.

3. In a trimming-machine, a rotary shaft having an attached rand-guide,and a cutter; a feather-edger surrounding said shaft and rotatabletherewith and with said cutter; combined with an independenttable-support, and a table pivotally mounted thereon near thecircumference of the said feather-edger, and a spring to keep the tablepressed in a yielding manner toward the rand-guide, substantially asdescribed.

4E. In a trimming-machine, a rotary shaft having an attached randfguide,and a cutter; a feather-edger surrounding said shaft and rotatable withit and said cutter; a spring surrounding said shaft and acting upon saidfeather-edger, to move it toward said cutter; combined with anindependent table-support, and a table pivotally mounted thereon, and aspring to normally press said table-support toward said rand-guide,substantially as described.

5. In a trimming-machine, a rotary shaft having an attached rand-guide,and a cutter; a feather-edger surrounding said shaft loosely and rotatedWith said shaft through the said cutter, and a spring to move saidfeatheredger toward said cutter; combined with a table-supportindependent of said featheredger and movable longitudinally withrelation to the axis of said shaft, said table-support having pivotedupon it near the circumference of the rand-guide a table, and means tohold said table in adjusted position, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BENJAMIN F. MAYO.

Witnesses:

AUGUSTA E. DEAN, FREDERICK L. EMERY.

